diff --git a/test/unordered/copy_tests.cpp b/test/unordered/copy_tests.cpp
index 139f3f30..8e910384 100644
--- a/test/unordered/copy_tests.cpp
+++ b/test/unordered/copy_tests.cpp
@@ -1,6 +1,6 @@
 
 // Copyright 2006-2009 Daniel James.
-// Copyright (C) 2022 Christian Mazakas
+// Copyright (C) 2022-2023 Christian Mazakas
 // Distributed under the Boost Software License, Version 1.0. (See accompanying
 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)